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Microchip Technology 1N755AE3/TR
- Part No.:
- 1N755AE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N755AE3/TR.pdf
- Description:
- DIODE ZENER 7.5V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,401
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Product details
Overview
1N755AE3/TR from Microsemi is a 500 mW, 7.5 V ±5% Zener diode in DO-35 glass axial package, qualified to JANTX level per MIL-PRF-19500/127, with 4 Ω dynamic impedance at 50 mA and +0.058 %/°C temperature coefficient - used for precision voltage reference and overvoltage protection in military power supplies.
For engineers reviewing the 1N755AE3/TR datasheet, 1N755AE3/TR pinout, 1N755AE3/TR application, or 1N755AE3/TR equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (250 °C/W junction-to-lead), RoHS compliance (e3 suffix), military qualification level, and DO-35 mechanical robustness under extended temperature cycling.
Technical Context
This device operates as a reverse-biased voltage regulator with a nominal Zener voltage of 7.5 V at 50 mA test current (IZT), exhibiting low dynamic impedance (4 Ω) and positive temperature coefficient (+0.058 %/°C) above 5 V. It maintains regulation across -65 °C to +175 °C operating range with metallurgical bond construction ensuring reliability under thermal shock.
Designed for fixed-voltage reference and shunt regulation, the 1N755AE3/TR delivers stable output under varying load and temperature conditions, with maximum reverse leakage of 2 µA at 5.0 V and forward voltage of 1.1 V at 200 mA - enabling use in both regulation and clamping roles within analog and power circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V at IZT = 50 mA - defines precise regulation point for reference and clamp circuits |
| Zener Tolerance | ±5% (A grade) - ensures predictable voltage window without binning or trimming |
| Dynamic Impedance (ZZT) | 4 Ω at IZT = 50 mA - minimizes output voltage variation under load transients |
| Power Dissipation | 500 mW at TL = 50 °C - supports continuous operation in compact, lead-mounted designs |
| Temp Coefficient (αVZ) | +0.058 %/°C - enables predictable drift compensation in wide-temperature systems |
| Reverse Leakage (IR) | 2 µA max at VR = 5.0 V - ensures low quiescent current in standby regulation |
| Junction Temp Range | -65 °C to +175 °C - validated for aerospace, defense, and downhole electronics |
Pinout & Package
Hermetically sealed DO-35 (DO-204AH) glass axial package with cathode band marking; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026. Weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal | Connected to circuit common; reverse bias applied between cathode and anode |
| Cathode | Zener regulation node | Banded end; connected to regulated voltage rail or clamping point |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/127 JANTX qualification | Validated reliability for defense-grade power systems requiring burn-in, life testing, and lot traceability |
| Internal metallurgical bond | Eliminates wire-bond fatigue failure modes under thermal cycling and vibration stress |
| RoHS-compliant plating (e3) | Meets EU Directive 2011/65/EU without compromising solderability or long-term intermetallic stability |
| Low capacitance & ESD immunity | Minimal parasitic capacitance (<2 pF typical) and non-sensitive to ESD per MIL-STD-750 method 1020 |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for space-qualified subsystems |
Applications
| Avionics Power Reference | Military Radio Bias Supply |
|---|---|
Use Scenario: Stable 7.5 V reference for ADC voltage scaling and op-amp biasing in airborne navigation units. IC Role / Device Role / Timing Role: Shunt voltage reference providing temperature-stable excitation for analog signal chains. Use Value: +0.058 %/°C tempco and 4 Ω ZZT ensure <±15 mV drift over -55 °C to +125 °C operational range. | Use Scenario: Overvoltage clamp protecting RF front-end LNA stages from transient surges during antenna switching. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing energy spikes while maintaining low leakage below threshold. Use Value: 2 µA IR at 5.0 V prevents loading of sensitive bias nodes; 500 mW rating handles repetitive 100 ms transients. |
| Downhole Sensor Excitation | Tactical Battery Monitor |
Use Scenario: Precision excitation source for strain-gauge bridges in oil/gas well logging tools operating at 175 °C ambient. IC Role / Device Role / Timing Role: High-temperature Zener reference enabling ratiometric measurement accuracy. Use Value: Full -65 °C to +175 °C junction rating and hermetic DO-35 package prevent parametric shift or seal failure. | Use Scenario: Voltage threshold detector in portable battlefield radios monitoring 12 V Li-ion battery health. IC Role / Device Role / Timing Role: Simple comparator input reference derived from regulated 7.5 V rail. Use Value: ±5% tolerance and JANTX qualification ensure consistent trip-point behavior across production lots and environmental extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N755AUR-1 | Same 7.5 V, ±5%, DO-213AA (MELF) surface-mount package; no military qualification | Used where PCB space is constrained and reflow assembly required; lacks JANTX screening | Select when RoHS-compliant SMT mounting is mandatory and MIL-spec screening is not required |
| 1N755B | Same 7.5 V but ±2% tolerance (C grade); identical DO-35 package and JANTX qualification | Applied where tighter voltage accuracy is needed without changing layout or thermal design | Choose for improved regulation precision while retaining full military qualification and mechanical fit |
Compared with 1N755AE3/TR, the 1N755AUR-1 offers SMT compatibility at the cost of qualification rigor, while the 1N755B improves voltage accuracy by 60% without altering package or thermal performance - enabling trade-offs between precision, form factor, and reliability assurance.
Availability
1N755AE3/TR is available at Aetrix Electronics and suitable for avionics power references, military radio bias supplies, and downhole sensor excitation requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N755AE3/TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N755AE3/TR belongs to Microsemi's legacy MIL-PRF-19500/127 qualified Zener diode family, engineered for mission-critical voltage regulation where long-term stability, thermal resilience, and process-controlled metallurgical bonding are essential.
FAQ
What is the Zener voltage and tolerance of the 1N755AE3/TR?
The 1N755AE3/TR has a nominal Zener voltage of 7.5 V at 50 mA test current (IZT) with a ±5% tolerance (A grade). This tolerance is confirmed in the Electrical Characteristics table on page 3 of Microsemi T4-LDS-0288 Rev. 1, and applies across the full operating temperature range of -65 °C to +175 °C. The 1N755AE3/TR maintains this specification under MIL-PRF-19500/127 JANTX screening.
Is the 1N755AE3/TR RoHS compliant?
Yes, the 1N755AE3/TR is RoHS compliant, indicated by the "e3" suffix in its nomenclature. Per Microsemi documentation, e3 denotes RoHS-compliant matte-tin plating on commercial-grade devices - and although this part carries JANTX qualification, the e3 marking confirms compliance with EU Directive 2011/65/EU. The 1N755AE3/TR meets solderability requirements per MIL-STD-750 method 2026.
What package type does the 1N755AE3/TR use?
The 1N755AE3/TR uses the DO-35 (DO-204AH) hermetically sealed glass axial-leaded package, as specified in the Mechanical and Packaging section of T4-LDS-0288. Dimensions are provided on page 6, with body diameter 1.40–2.29 mm and overall length 25.4–38.1 mm. The cathode is marked by a band, and leads are tin-lead or RoHS-compliant matte-tin plated.
What is the maximum power dissipation for the 1N755AE3/TR?
The 1N755AE3/TR has an average rated power dissipation of 500 mW at lead temperature (TL) = +50 °C with 0.375 inch (9.53 mm) lead length from body, derating linearly to zero at +175 °C. When mounted on a PCB, it is rated for 400 mW at ambient temperature (TA) = +55 °C, per the Maximum Ratings table on page 1 of T4-LDS-0288. Thermal resistance junction-to-lead is 250 °C/W.
Does the 1N755AE3/TR have military qualification?
Yes, the 1N755AE3/TR is qualified to JANTX level per MIL-PRF-19500/127, as stated in the DESCRIPTION and PART NOMENCLATURE sections of T4-LDS-0288. The "A" in the part number indicates ±5% tolerance, and the absence of a reliability level prefix (e.g., JAN, JANTXV) implies JANTX grade by default for this series. It undergoes screening including burn-in, temperature cycling, and lot acceptance testing.
1N755AE3/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N755AE3/TR FAQ
1.How can I place an order for 1N755AE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N755AE3/TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1N755AE3/TR reliable?
The price and inventory of 1N755AE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N755AE3/TR is usually 5 days.
3.What payment methods are accepted for 1N755AE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N755AE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N755AE3/TR?
1N755AE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N755AE3/TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1N755AE3/TR?
For technical support, including 1N755AE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N755AE3/TR requirements.
6.How does Aetrix verify that 1N755AE3/TR is sourced from the original manufacturer or authorized distributors?
All 1N755AE3/TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N755AE3/TR meets industry standards.
7.What is the process for return or replacement of 1N755AE3/TR?
All 1N755AE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N755AE3/TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1N755AE3/TR part is unused and in its original packaging.
Return procedure for 1N755AE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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